EP2327982A4 - Frequency selection method for eddy current measurement and method of measuring depth of hardening - Google Patents

Frequency selection method for eddy current measurement and method of measuring depth of hardening

Info

Publication number
EP2327982A4
EP2327982A4 EP09818644A EP09818644A EP2327982A4 EP 2327982 A4 EP2327982 A4 EP 2327982A4 EP 09818644 A EP09818644 A EP 09818644A EP 09818644 A EP09818644 A EP 09818644A EP 2327982 A4 EP2327982 A4 EP 2327982A4
Authority
EP
European Patent Office
Prior art keywords
hardening
eddy current
current measurement
frequency selection
measuring depth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP09818644A
Other languages
German (de)
French (fr)
Other versions
EP2327982A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP2327982A1 publication Critical patent/EP2327982A1/en
Publication of EP2327982A4 publication Critical patent/EP2327982A4/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/725—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables by using magneto-acoustical effects or the Barkhausen effect

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP09818644A 2008-10-28 2009-10-16 Frequency selection method for eddy current measurement and method of measuring depth of hardening Ceased EP2327982A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008276575A JP5104719B2 (en) 2008-10-28 2008-10-28 Frequency selection method and quenching depth measurement method in eddy current measurement
PCT/JP2009/005407 WO2010050134A1 (en) 2008-10-28 2009-10-16 Frequency selection method for eddy current measurement and method of measuring depth of hardening

Publications (2)

Publication Number Publication Date
EP2327982A1 EP2327982A1 (en) 2011-06-01
EP2327982A4 true EP2327982A4 (en) 2013-02-27

Family

ID=42128507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09818644A Ceased EP2327982A4 (en) 2008-10-28 2009-10-16 Frequency selection method for eddy current measurement and method of measuring depth of hardening

Country Status (7)

Country Link
US (1) US8432161B2 (en)
EP (1) EP2327982A4 (en)
JP (1) JP5104719B2 (en)
KR (1) KR101218442B1 (en)
CN (1) CN101960302B (en)
BR (1) BRPI0907968A2 (en)
WO (1) WO2010050134A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120043962A1 (en) * 2010-08-20 2012-02-23 Changting Wang Method and apparatus for eddy current inspection of case-hardended metal components
US9082228B2 (en) * 2011-01-12 2015-07-14 Intel Corporation Analytical motion blur rasterization with compression
JP6067211B2 (en) * 2011-05-27 2017-01-25 日産自動車株式会社 Non-contact power feeding device
CN102506798A (en) * 2011-10-25 2012-06-20 马鞍山方圆回转支承股份有限公司 Portable quenching depth nondestructive testing device for slewing bearing raceway
JP6551885B2 (en) * 2015-10-03 2019-07-31 国立大学法人 岡山大学 Nondestructive inspection device and nondestructive inspection method
CN106596712B (en) * 2016-11-22 2017-11-28 西安交通大学 A kind of frequency-selecting tape pulse eddy nondestructive testing method based on depth of defect
WO2022195788A1 (en) * 2021-03-17 2022-09-22 日本製鉄株式会社 Hardness computing device, hardness measuring system, hardness computing method, and hardness computing program

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648611A (en) * 1993-12-22 1997-07-15 The Timken Company Process for measuring the case depth of case-carburized steel
JP2002014081A (en) 2000-06-30 2002-01-18 Sensor System Kk Method and device for measuring hardness penetration
DE10337629A1 (en) 2002-08-23 2004-03-04 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Drive unit to generate axial relative movement between turnable components with second component fastened detachable to additional part via holder
CN2938086Y (en) * 2006-08-17 2007-08-22 游凤荷 Vortex detector for surface hardening layer of metal material
JP4807281B2 (en) * 2006-11-27 2011-11-02 トヨタ自動車株式会社 Hardening pattern inspection method and inspection apparatus
JP4811276B2 (en) * 2007-01-10 2011-11-09 トヨタ自動車株式会社 Quenching depth measuring device and quenching depth measuring method
JP4998821B2 (en) * 2007-03-14 2012-08-15 住友金属工業株式会社 Eddy current inspection method and eddy current inspection apparatus for implementing the eddy current inspection method
JP4978360B2 (en) * 2007-07-26 2012-07-18 トヨタ自動車株式会社 Quenching depth measuring device and quenching depth measuring method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CUFFE J ET AL: "Eddy current measurement of case hardened depth of steel components", ABSTRACTS / 17TH WORLD CONFERENCE ON NONDESTRUCTIVE TESTING : SHANGHAI, CHINA, OCTOBER 25 - 28, 2008 / [ICNDT], SHANGHAI, 25 October 2008 (2008-10-25), pages 1 - 7, XP002661833 *
No Search *
See also references of WO2010050134A1 *

Also Published As

Publication number Publication date
CN101960302B (en) 2012-07-04
US8432161B2 (en) 2013-04-30
KR101218442B1 (en) 2013-01-04
US20120126802A1 (en) 2012-05-24
WO2010050134A1 (en) 2010-05-06
CN101960302A (en) 2011-01-26
JP5104719B2 (en) 2012-12-19
BRPI0907968A2 (en) 2018-05-22
KR20100107059A (en) 2010-10-04
JP2010107214A (en) 2010-05-13
EP2327982A1 (en) 2011-06-01

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Owner name: TOYOTA JIDOSHA KABUSHIKI KAISHA

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